Review Exercise (Solutions)

The solutions of the Review Exercise of book “Model Textbook of Mathematics for Class XI” published by National Book Foundation (NBF) as Federal Textbook Board, Islamabad, Pakistan are given on this page.

Question 1. Select the best matching option. Choose the correct option.
See MCQs: Question 1

Question 2. How many words can be formed by using $4$ distinct alphabets?
Solution: Question 2 & 3

Question 3. How many $3$-digit numbers are there which has $0$ at unit place?
Solution: Question 2 & 3

Question 4. How many $6$-digit numbers can be formed using digits $0,2,3,4,5,7$ without repeating?
Solution: Question 4, 5 & 6

Question 5. The numbers of ways of arranging $7$ keys in a key chain.
Solution: Question 4, 5 & 6

Question 6. Tweleve persons are seated at a round table. Find number of ways of their arrangements if two particular persons don't want to sit togather?
Solution: Question 4, 5 & 6